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Description
The SF-1 bushes present multiple characteristics which can be summarized as follows: • exempt from lubrication • elevated load capacities - 140 N/mm2 - on large elasto-plastic surfaces • elevated flow and low friction coefficients both static and dynamic (no stick-slip effect) • the exercising temperature is from -195 °C to +280 °C. • vibration, noise and pollution maximally reduced. The possibility to use coupling metals which have low hardness facilitating the work and reducing costs • light weight materials, compact and with minimum encumbrance • ease of mounting • oil or water are not absorbed, presenting low expansion, high conductibility and excellent thermal stability • elevated chemical resistance: easily covered with materials resistant to liquid, gas or solids which are chemically aggressive using a supplementary galvanic layer. SF-1 bushes are widely used in hydraulic vehicles, automobiles, motorcycles, agricultural machines, textile machines, printing machines, gymnastic equipment and many other applications. SF-1 bushes generally have good initial adaptability with a wear of 0,01 ~ 0,02mm. During the adjustment period a part of the surface in PTFE is deposited on the shaft or on the contact surface forming a self-lubricating film capable of reducing friction and wear. After this initial phase and with progressive increases in the functioning hours, once 80% o the PTFE is consumed, the bush is considered depleted and therefore should be replaced. The roughness of the surface must generally be inferior to 0,8 µ.